| Explosion-proof mark | ExdIICT6 |
| Power | 25W(10W/15W/20W) |
| Impedance | 8Ω |
| Frequency Response | 250~3000 Hz |
| Ringer Volume | 100-110dB |
| Corrosion Grade | WF1 |
| Ambient Temperature | -30~+60℃ |
| Atmospheric Pressure | 80~110KPa |
| Relative Humidity | ≤95% |
| Lead Hole | 1-G3/4” |
| Installation | Wall-mounted |